The British jet engine that failed in the 'Valley of Death'

Reaction Engines, a UK firm attempting to develop a revolutionary aerospace engine, faced a setback leading to its collapse due to lack of funding and support from key investors like Boeing and Rolls-Royce. The company's innovative heat exchanger technology designed to cool super-heated air at hypersonic speeds failed to gain necessary backing, marking a challenging end for the venture. Despite the disappointment, former employees reflect on the company's achievements and the potential impact of their technology in the aerospace industry.